I don't think I've wished failure on any decentralized social network platform before.
My sincerest hope is that the Blue Sky team has a change of heart and starts building on well-established protocol standards instead.
There is a long-shot option that they are able to cannibalize the existing fediverse, then use that to push out to even more users. I think this is really unlikely.
So the next best option is that they fail quickly and are forgotten soon.